Installation Guide

6. GFCI Wiring Diagram
This diagram shows a “Three Wire Plus Ground” installation. It
has a load Neutral connection, commonly required for spas
containing both 120 and 240 volt equipment. They need the
load neutral connection to produce the 120 volt power. The
GFCI is usually 50 or 60 amps, depending on the amperage of
your spa. A GFCI can be purchsed at most Home Centers,
Hardware Stores, or directly from QCA Spas. Refer to the table
on page 20 to see what amperage your spa requires.
Note This - The white Neutral
wire from the back of the
G.F.C.I. MUST be connected
to an incoming Line Neutral.
The internal mechanism of
the G.F.C.I. requires this neu-
tral connection. The G.F.C.I.
will not work without it.
IMPORTANT NOTE: Installation of this
GFCI-Circuit Breaker, including ampere
sizing and selection of conductor size and
type, must be accomplished by a qualified
electrician in accordance with the National
Electrical Code, or the Canadian Electrical
Code, and all federal, state and local codes
and regulations in effect at the time of
installation.
LOAD 2 - OUTPUT
LOAD NEUTRAL - OUTPUT
LOAD 1 - OUTPUT
LINE NEUTRAL - INPUT
LINE 2 - INPUT
LINE 1 - INPUT
GROUND
120 volts
120 volts
240 volts
From
Electric
Service
Panel or
Other
Source
To Spa or
Pool
Equipment
TEST
White Wire
Line Neutral
LOAD
POWER
LOAD
NEUTRAL
LOAD
POWER
Siemens GFCI Breaker Box
16